Loose-leaf binder



30 1952 ``E. F...ppx:N|-:h Erm. Y -2,612,167

, LOOSE-LEAF BINDER Filed Nov. 15'. 1949 I 2 Simms-SHEET;

v 1r., 'L'. l Y v 9 I S f W Hh WI 25 v 1 6 lg i? n? 9 7 T-"f will 2@ ,I WI'- Fy y 22- 5. y l r2W23 WMM?? I 2,3 i In x y l 0-" se 15 4o 3 '20 ,r (E l @y ,l m.

Patented Sept. 30, 1952 vUNITD 'STATES PATENT oppm l y Loosn-ziillmnaa y I Edward F. Buenger,

Wedge, (lak Park,

Jones Company, Massachusetts River Forest, and Fred D. Ill., assignors. to. Wilsoiv Chicago,

Ill., a corporation of Application yNovember 15, 1949, Serial No. 127,412

1 Claim; (Cl. 12B-8) changes are relatively few. When the sheets are not being referred to it is necessary to have them compressed so that the binder may be stored without taking up too much space and may be handled without tearing the sheets. However, when the sheets are compressed it is diicult yto spread them' open to. the-extent necessary for easy reading.

The principalr object of our invention is to provide a. post binder adapted to hold the sheet contents securely in closed position, and may be readilyr expanded to an intermediate reference position while still holding the sheets against removal or may be opened easily to permit the addition or removal of sheets. Other objects will become apparent upon reading the following description, taken in conjunction with the accompanying drawings, in which:

Figure l is a perspective view of a binder embodying the invention, showing the top cover opened with the sheet. contents lockedin closed position;

Figure 2 is a fragmentary top'y plan View of the binder with the sheet retaining mechanism locked in closed position;

Figure 3 is a side elevation of the binder with the lock slide in locked position;

Figure 4 is a fragmentary plan view of the binder in intermediate position;

Figure 5 is a fragmentary side elevationv sho-wing the pivoted latch in open position;

Figure 6 is a fragmentary top plan view with the sheet retaining mechanism in open position;

Figure 7 is a side elevation of the binder with the lock slide in open position;

Figure 8 is a longitudinal sectional view taken along the line 8-8 of Figure 2; and

Figure 9 is a cross sectional view taken along the line 9 9 of Figure 6 and showing, in dotted lines, the sheet retaining posts partially raised with the transfer bar removed.

In the drawings, the reference numerals 2 and 3 indicate a pair of complementary back sections. Back section 3 has a supplemental metal plate 4 permanently secured to its top surface in any suitable manner. Each end of the plate 4 is protop wall of each channel 2 1 vided with an inward y extending channel 5 embracing the corresponding end of section Zso that the baclrv sections relative to. each other.

4 is wider than the rest of the top `wall to form a. shoulder 1. A lug `il projects upwardly from back section 2 adjacent to its inner edge at each end thereof'. The lugs 8 are preferably struck from the back sectionl 2, but they may be formed separately and'welded thereto. the back sections are movedoutwardly and act as stop members back sections.

A cover member 9 and a :dat plate I0 are hinged back section 2, as indicated at Il.' The plate I0 carries a pairof tubular' sheet retaining posts It?,l rigidly secured thereto.

A cover member yI3 is lhinged to back section 3,

as indicated at I4. The. plate 4 is slightlynargated slots I8 in thev lock` slide. slots i8 Will-of course determine the distance the lock slide is permitted to move relative lto the flange l5. beyond the end of flange I 5 and to form a lip I6' to facilitate the longitudinal movement of the lock slide'with suicient fricf tion to hold the slide in any position to which it' is moved.

The lock slide I6 bayonet slots I9 open at one edge and having their restricted portions parallel to slots I8. The ange I5 is provided with apertures 20 adapted to register with the open ends of the bayonet slots when the lock slide is pulled outwardly to its open position. A transfer bar 2l having solid posts 22 telescoping into the tubular posts I 2 is provided with studs 23 which cooperate with lock slide I6 to secure the transfer bar in the binder. The studs are rigidly secured to the transfer bar and have a reduced neck portion 24 adapted to t in the restricted portion of the bayonet slots I9. When the studs 23 are engaged by the restricted portions of bayonet slots I9 the back sections can be moved outwardly to the extent permitted by lugs 8 and shoulders 1, but in this position the posts 22 are still telescoped in tubular posts I2 and the transfer bar cannot be removed for the purpose of addingor removing may be moved transversely' The inner end 6 of the' The lugs 8 engage. the shoulders l wheno prevent separation of the One end of thelock slide extends is bent inwardly is provided with a pair or* sheets. When the lock slide is pulled outwardly to its open position, the open portions of the bayonet slots are aligned with the studs, and the transfer bar may be easily removed.

A tubular post 25, similar to the posts I2, except that it is threaded on the inside, as indicated at 26, is secured Vto the plate l at'the center of the plate in the same manner the posts I2 are secured. A stud 21 having a threaded shank 28 is threaded into post 25. The transfer bar 2| has an aperture 29 large enough to permit the head of the stud 21 to project therethrough. 'A collar 3U engages the transfer bar and prevents the stud from passing entirely through the aperture, 29. The ange I5 and lock slide I6 are provided with slots 3| and 32 respectively, each Wide enough to permit the head of thelstud 21 to pass therethrough. The slot 32 is elongated to permit sliding movement of lock slide I6.

A latch 33 is pivoteclto the flange I5, as indicated at 34. The latch is offset slightly, as indicated at 35, so that it may swing over lock slide I6. The latch is provided with a notch 36 adapted to engage a reduced neck portion 31 on stud 21 to prevent relative movement of back sections 2 and 3. One edge of the latch has an upturnedlip 38 to facilitate manipulation of the latch. The opposite edge of the latch is also provided with a turned up lip 39 adjacent to notch 36. The lock slide IB is provided with a lug 40 which abuts lip 39 when the lock slide is in closed position and the notch 36 is in engagement with the reduced neck portion of stud 21. The lug 40 may be struck from the lock slideor may be formed separately and welded thereto.

-When the -sheets are impaled on posts I2 and 25 the transfer bar 2| is pressed against the sheets and the stud 21 is threaded into post 25 far enough so that the notch of latch 33 will engage the reduced neck portion of the stud 21. In this-position. with the lock slide in closed position, the sheets are locked in the binder in compressed position. The latch 33v may be manually moved about its pivot to disengage the notch 36 from the stud, and the back sections 2 and 3 'may be moved to intermediate reference position. However, in this position the studs 23 on the transfer bar are engaged by the restricted portions vofthe bayonet slots in the lock slide, and therefore, the transfer bar is locked in position and the sheets are held against removal.

1f sheet changes-are to be made, the lock slide y may be pulled outwardly until the open edges of the bayonet slots are aligned with the studs 23.

The-transfer bar may then be moved at right 5 angles to the flange I5 until studs 23 are clear 4 of the apertures 20 in the flange. and then moved pivotally with plate I0 about the hinge II until the transfer bar is clear of flange l5 so that it can be lifted to remove posts 22 from the tubular posts l2. Movement of the lock slide to open position when the notch 36 of latch 33 is engaged with the stud 21 causes the 11ug-40 to engage the lip 39 to automatically move the latch to open position so that it is possible to move the back sections from closed position to open position without first moving them to the intermediate position used for reference.

Although we have described a few embodiments .of our invention in considerable detail, it will be understood that the drawings are intended to be illustrative, rather than restrictive, as many details may be modied or changed without departing from the spirit or scope of our invention. Accordingly, We do not desire to be restricted to the exact structures described except as limited by the appended claim.

, In a loose leaf binder, a pair of telescoping back sections, a post carrying'plate hinged t0 one of said back sections, a plurality of sheet retaining posts rigidly secured to said plate, a ange rigidly secured to said other back section, a transfer bar positioned adjacent said flange, posts rigidly secured to said transfer bar and engaging said first mentioned posts in telescoping relationship, a lock slide mounted on said flange and operable to lock said transfer bar in position or to release it from locked position, another post rigidly secured to said hinged plate, said last mentioned post having a stud at its free end, said stud projecting through aligned apertures in said flange and said lock slide, a-latch pivotally REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 931,819 Walker Aug. 24, 1909 1,830,961 Rabinof Nov. l0, 1931 2,148,789 Unger Feb. 28, 1939 2,489,448

Buckner Nov. 29, 1949 

